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Diffstat (limited to 'TAO/docs/releasenotes/index.html')
| -rw-r--r-- | TAO/docs/releasenotes/index.html | 54 |
1 files changed, 15 insertions, 39 deletions
diff --git a/TAO/docs/releasenotes/index.html b/TAO/docs/releasenotes/index.html index 2e1c82cbda4..2da12be7343 100644 --- a/TAO/docs/releasenotes/index.html +++ b/TAO/docs/releasenotes/index.html @@ -37,9 +37,6 @@ release</a> of <a href="http://www.cs.wustl.edu/~schmidt/TAO.html">TAO</a>: <a href="#interfrepo">Interface Repository</a></li> <li> -<a href="OBV.html">Object-by-Value</a></li> - -<li> <a href="#nservices">CORBA Naming Service </a>and <a href="../INS.html">Interoperable Naming Service</a></li> <li> @@ -97,18 +94,13 @@ A complete list of all modifications to TAO is available in the <a href="http:// <a NAME="idl"></a>IDL Compiler</h3> Point of contact: <a href="mailto:gokhale@research.bell-labs.com">Aniruddha Gokhale</a> -<p>Current status: (As of May 15, 1999.) +<p>Current status: (As of Jan 22, 1999.) <ul> <li> Generated code closely follows the C++ Mapping specified in the latest C++ mapping for CORBA 2.3 (Document ptc/98-09-03).</li> <li> -We are now able to handle recursive types. We are also able to -generate optimized typecodes. -</li> - -<li> Struct members of type strings and arrays of strings now use the managed type instead of the _var type. This change was necessary to conform to the IDL->C++ mapping.</li> @@ -446,11 +438,20 @@ requests to servants. <P> TAO supports the POA spec. This section will carry updates as available.</li> </ul> Known issues: - <ul> -<li> ORB::shutdown needs to deactive the POA Managers. We need to fix -this. </li><P> +<li>The synchronization in the POA is not optimal. For example, the +locks are held across the invocation on the servant. The locks are +also held across the invocation on the AdapterActivator. This forces +the use of recursive locks inside the POA. However, the problem with +recursive locks is that multiple threads cannot dispatch requests on +the same POA simultaneous.</li><P> + +<li>We need to add the new RefCountServantBase class to TAO. This +reference counted base class was added to the CORBA specification to +avoid race conditions for servant deletion in threaded servers. <a +href="ftp://ftp.omg.org/pub/docs/orbos/98-07-12.pdf">ftp://ftp.omg.org/pub/docs/orbos/98-07-12.pdf</a> +contains the relevant text.</li><P> </UL> @@ -470,25 +471,8 @@ Recently completed work:<P> <ul> -<li> TAO's POA now properly supports both the threading policies: -SINGLE_THREAD_MODEL and ORB_CTRL_MODEL. </li><P> - -<li>The synchronization in the POA is now very optimal. For example, -the locks are not held across the invocation on the servant. The locks -are also not held across the invocation on the AdapterActivator and -ServantManagers. This allows us to use regular locks instead of -recursive locks inside the POA. This also allows multiple threads to -dispatch requests on the same POA simultaneous.</li><P> - -<li>TAO now supports reference counting between POA and servants, -including the new RefCountServantBase and ServantBase_var -classes. RefCountServantBase is a reference counted base class that -was added to the CORBA specification to avoid race conditions for -servant deletion in threaded servers. <a -href="ftp://ftp.omg.org/pub/docs/orbos/98-07-12.pdf">ftp://ftp.omg.org/pub/docs/orbos/98-07-12.pdf</a> -contains the relevant text. Check <a -href="../poa_migration.html#Reference counting Servants">here</a> on -some hints to avoid trouble.</li><P> +<li> Support for collocation should be much better now because the POA +can tell if we created the object reference.</li><P> <li> The POA now supports active demultiplexing of servants in the SYSTEM_ID and the USER_ID policy. This should make the POA faster and @@ -560,9 +544,6 @@ removed. </li> <P> <li> New examples have been added to show how servants can be dynamically loaded from DLLs on demand. </li> <P> -<li> Support for collocation should be much better now because the POA -can tell if we created the object reference.</li><P> - </UL> <hr> <h3> @@ -580,12 +561,7 @@ object and make invocations on it using the DII. <p>Recent Work: TDB <p>Future Work: TDB <p> - -<hr> - -<br><!--#include virtual="OBV.html" --> <hr> - <h3> <a NAME="nservices"></a>CORBA Naming Service and Interoperable Naming Service</h3> Points of contact: <a href="mailto:marina@cs.wustl.edu">Marina |